        #progressContainer {
            width: 200px;
            background-color: #f3f3f3;
            border: 1px solid #ccc;
            margin-top: 10px;
            height: 20px;
            position: relative; 
        }
        #progressBar {
            width: 0%;
            height: 100%;
            background-color: #4caf50;
            text-align: center;
            color: white;
            font-size: 12px;
            line-height: 20px;
        }
        #preview {
            margin-top: 20px;
            max-width: 100%;
            max-height: 100%;
            display: none; 
            border: 1px solid #ccc;
        }
        #uploadBtn {
            margin-top: 10px;
        }
		 /* 隐藏文件选择框右侧的提示文字 */
        input[type="file"]::file-selector-button {
            display: inline-block;
        }

        input[type="file"] {
            color: transparent;
        }
